Genetic and selective factors in reduction of the hallux inPongo pygmaeus
| Autor: | Charles M. Rogers, Russell H. Tuttle |
|---|---|
| Rok vydání: | 1966 |
| Předmět: |
Diminution
biology Hominidae medicine.medical_treatment Inheritance (genetic algorithm) Anatomy Toes Phalanx Thumb biology.organism_classification Biological Evolution Numerical digit Radiography body regions medicine.anatomical_structure Pongo pygmaeus Nails Anthropology Genetics medicine Animals Hallux Reduction (orthopedic surgery) |
| Zdroj: | American Journal of Physical Anthropology. 24:191-198 |
| ISSN: | 1096-8644 0002-9483 |
| DOI: | 10.1002/ajpa.1330240207 |
| Popis: | Extreme reduction of the hallux is unique to the orang-utan (Pongo pygmaeus) among Primates. Hallucal diminution has advanced so far that 60% of orang-utans lack both distal phalanges and nails. Absence of these structures occurs significantly more often in females than in males. Hypotheses on possible genetic control of the condition have been tested and indicate that either single gene inheritance or polygenic inheritance with variable expressivity is involved. Reduction of pollex and of hallux in Pongo have advanced with selection for a specialized four-digit grasp in hands and feet. Diminution has progressed farther in the great toe than in the thumb due to selection for fine manipulation in the latter digit. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text